Dow Jones retreats from all-time highs after strong run; Twitter slumps

Wall Street's main indexes opened lower on Monday, slipping from record levels as investors locked in gains after a stellar vaccine and stimulus-fueled rally, while Twitter shares slumped 11% following the permanent suspension of President Donald Trump's account.

The Dow Jones Industrial Average fell 177.6 points, or 0.57%, at the open to 30,920.77. The S&P 500 fell 32.5 points, or 0.85%, at the open to 3,792.11, while the Nasdaq Composite dropped 173.2 points, or 1.32%, to 13,028.1 at the opening bell.